Andrew Ng says AI has sped up coding, so product management is now the bottleneck for startups. Steve Jennings / Stringer/Getty Images AI sped up coding. Now, the real challenge for startups is product management. If a prototype takes a day, waiting a week for user feedback is "really painful," said Andrew Ng. The former Google Brain scientist said his teams are "increasingly relying on gut" to make faster decisions. AI has made coding the easy part. The hard part now is product management, said...